CVE-2026-39826 — MEDIUM (6.1)

Vulnerability Description

If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.

CVSS Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Golang	Go	< 1.25.10

Related Weaknesses (CWE)

CWE-116

References

https://go.dev/cl/771180Patch
https://go.dev/issue/78981Patch
https://groups.google.com/g/golang-announce/c/qcCIEXso47MRelease Notes
https://pkg.go.dev/vuln/GO-2026-4980Vendor Advisory

FAQ

What is CVE-2026-39826?

CVE-2026-39826 is a vulnerability with a CVSS score of 6.1 (MEDIUM). If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape an...

How severe is CVE-2026-39826?

CVE-2026-39826 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-39826?

Check the references section above for vendor advisories and patch information. Affected products include: Golang Go.